22631117987 has 8 divisors (see below), whose sum is σ = 23854306560. Its totient is φ = 21411137160.

The previous prime is 22631117963. The next prime is 22631118089. The reversal of 22631117987 is 78971113622.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 22631117987 - 2⁶ = 22631117923 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22631117947) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 787439 + ... + 815672.

It is an arithmetic number, because the mean of its divisors is an integer number (2981788320).

Almost surely, 2^22631117987 is an apocalyptic number.

22631117987 is a deficient number, since it is larger than the sum of its proper divisors (1223188573).

22631117987 is a wasteful number, since it uses less digits than its factorization.

22631117987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1603873.

The product of its digits is 254016, while the sum is 47.

The spelling of 22631117987 in words is "twenty-two billion, six hundred thirty-one million, one hundred seventeen thousand, nine hundred eighty-seven".